Use python-savannaclient 0.3.rc4
Use python-savannaclient 0.3.rc4

Change-Id: Id5e4ddf93151ff097e32bd7d1eb19d1a8ff0d987

openstack/sahara-tests,openstack/sahara-scenario,esikachev/sahara-tests,openstack/sahara-scenario,openstack/sahara-tests,openstack/sahara-scenario,openstack/sahara-tests,esikachev/sahara-tests,openstack/sahara-tests,esikachev/sahara-tests